The Golden Ratio, Phi, is used extensively in Geometry and certainly provides an aesthetically pleasing rectangle. All the chatter of being a kind of all super ratio that Da Vinci used on the Mona Lisa, the Egyptians used on the great Pyramids or nature itself uses extensively in the construction of lowers or shells are not borne out by reality. From medieval times a sort of social media misinformation campaign has lifted this ratio to stratospheric, if undeserved, heights.